Type 1 diabetes mellitus (T1DM), also known as insulin-dependent diabetes mellitus or juvenile-onset diabetes, occurs primarily due to β-cell destruction, usually leading to absolute insulin deficiency. The condition is immune-mediated and is usually idiopathic. Tight glycemic control using intensive insulin therapy was shown in the Diabetes Control and Complications Trial (DCCT) to reduce rates of microvascular complications in T1DM; however, achieving and maintaining such control in T1DM using standard insulin therapy requires a high level of support and is associated with increased potential for hypoglycemia, increased weight gain and, in some patients, aggravation of cardiovascular risk factors including dyslipidemia.